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// Copyright 2015 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.devtools.build.lib.profiler.chart;
import com.google.common.base.Optional;
import com.google.devtools.build.lib.profiler.ProfileInfo;
import com.google.devtools.build.lib.profiler.ProfilePhaseStatistics;
import com.google.devtools.build.lib.vfs.Path;
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.util.List;
/**
* Creates an HTML page displaying the various statistics and charts generated
* from the profile file.
*/
public final class HtmlCreator {
private final PrintStream out;
private final Chart chart;
private final HtmlChartVisitor chartVisitor;
private final Optional<SkylarkStatistics> skylarkStats;
private HtmlCreator(
PrintStream out,
Chart chart,
Optional<SkylarkStatistics> skylarkStats,
int htmlPixelsPerSecond) {
this.out = out;
this.chart = chart;
chartVisitor = new HtmlChartVisitor(out, htmlPixelsPerSecond);
this.skylarkStats = skylarkStats;
}
private void print() {
htmlFrontMatter();
chart.accept(chartVisitor);
if (skylarkStats.isPresent()) {
skylarkStats.get().printHtmlBody();
}
htmlBackMatter();
}
private void htmlFrontMatter() {
out.println("<html><head>");
out.printf("<title>%s</title>", chart.getTitle());
chartVisitor.printCss(chart.getSortedTypes());
if (skylarkStats.isPresent()) {
skylarkStats.get().printHtmlHead();
}
out.println("</head>");
out.println("<body>");
}
private void htmlBackMatter() {
out.println("</body>");
out.println("</html>");
}
/**
* Writes the HTML profiling information.
* @param info
* @param htmlFile
* @param statistics
* @param detailed
* @param htmlPixelsPerSecond
* @throws IOException
*/
public static void createHtml(
ProfileInfo info,
Path htmlFile,
List<ProfilePhaseStatistics> statistics,
boolean detailed,
int htmlPixelsPerSecond)
throws IOException {
try (PrintStream out = new PrintStream(new BufferedOutputStream(htmlFile.getOutputStream()))) {
ChartCreator chartCreator;
Optional<SkylarkStatistics> skylarkStats;
if (detailed) {
chartCreator = new DetailedChartCreator(info, statistics);
skylarkStats = Optional.of(new SkylarkStatistics(out, info));
} else {
chartCreator = new AggregatingChartCreator(info, statistics);
skylarkStats = Optional.absent();
}
Chart chart = chartCreator.create();
new HtmlCreator(out, chart, skylarkStats, htmlPixelsPerSecond).print();
}
}
}
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